For ages certain gemstones have been designated for anniversaries, some
<br>
of the existing lists are in conflict. So, this chart not complete by any means. 

<p>
<table style="text-align:left;">
	<tr><td>1 year:  </td><td width="10">&nbsp;</td><td>Peridot, Morganite (Pink Beryl), Aquamarine, Freshwater Pearl</td></tr>
	<tr><td>2 years:  </td><td width="10">&nbsp;</td><td>Pearl, Jade, Rock Crystal, Rose Quartz, Garnet</td></tr>
	<tr><td>3 years </td><td width="10">&nbsp;</td><td>Garnet, Ruby, Chrysoprase, Rock Crystal, Pearl</td></tr>
	<tr><td>4 years:  </td><td width="10">&nbsp;</td><td>Blue Topaz, Blue Zircon, Moonstone, Amethyst</td></tr>
	<tr><td>5 years:  </td><td width="10">&nbsp;</td><td>Sapphire, Pink Tourmaline, Carnelian, Turquoise</td></tr>
	<tr><td>6 years:  </td><td width="10">&nbsp;</td><td>Amethyst, Turquoise, Coral, Garnet</td></tr> 
	<tr><td>7 years:  </td><td width="10">&nbsp;</td><td>Onyx, Sapphire, Golden Beryl, Coral, Lapis Lazuli</td></tr>
	<tr><td>8 years:  </td><td width="10">&nbsp;</td><td>Tourmaline, Tanzanite, Opal, Aventurine</td></tr>
	<tr><td>9 years:  </td><td width="10">&nbsp;</td><td>Lapis Lazuli, Amethyst, Green Spinel, Citrine, Tigereye</td></tr>
	<tr><td>10 years:  </td><td width="10">&nbsp;</td><td>Diamond, Blue Sapphire, Turquoise, Black Onyx</td></tr>
	<tr><td>11 years:  </td><td width="10">&nbsp;</td><td>Turquoise, Citrine, Yellow Zircon, Garnet, Hematite</td></tr>
	<tr><td>12 years:  </td><td width="10">&nbsp;</td><td>Jade, Opal, Amethyst, Pearl, Agate</td></tr>
	<tr><td>13 years:  </td><td width="10">&nbsp;</td><td>Citrine, Moonstone, Hawk's Eye, Malachite</td></tr>
	<tr><td>14 years:  </td><td width="10">&nbsp;</td><td>Opal, Moss Agate, Bloodstone</td></tr>
	<tr><td>15 years:  </td><td width="10">&nbsp;</td><td>Ruby, Rhodolite, Garnet, Alexandrite, Rock Crystal</td></tr>
	<tr><td>16 years:  </td><td width="10">&nbsp;</td><td>Peridot, Red Spinel, Aquamarine</td></tr>
	<tr><td>17 years:  </td><td width="10">&nbsp;</td><td>Carnelian, Citrine, Amethyst</td></tr>
	<tr><td>18 years:  </td><td width="10">&nbsp;</td><td>Cat's Eye, Chrysoberyl, Aquamarine, Opal</td></tr>
	<tr><td>19 years:  </td><td width="10">&nbsp;</td><td>Aquamarine, Red Garnet, Topaz</td></tr>
	<tr><td>20 years:  </td><td width="10">&nbsp;</td><td>Emerald, Yellow Diamond</td></tr>
	<tr><td>21 years:  </td><td width="10">&nbsp;</td><td>Iolite</td></tr>
	<tr><td>22 years:  </td><td width="10">&nbsp;</td><td>Spinel (all colors)</td></tr>
	<tr><td>23 years:  </td><td width="10">&nbsp;</td><td>Sapphire, Imperial Topaz</td></tr>
	<tr><td>24 years:  </td><td width="10">&nbsp;</td><td>Tanzanite</td></tr>
	<tr><td>25 years:  </td><td width="10">&nbsp;</td><td>Tsavorite, Green Garnet</td></tr>
	<tr><td>30 years:  </td><td width="10">&nbsp;</td><td>Pearl, Diamond, Jade</td></tr>
	<tr><td>35 years:  </td><td width="10">&nbsp;</td><td>Emerald, Jade, Coral</td></tr>
	<tr><td>40 years:  </td><td width="10">&nbsp;</td><td>Ruby</td></tr>
	<tr><td>45 years:  </td><td width="10">&nbsp;</td><td>Sapphire, Alexandrite, Cat's Eye</td></tr>
	<tr><td>50 years:  </td><td width="10">&nbsp;</td><td>Imperial / Golden Topaz</td></tr>
	<tr><td>55 years:  </td><td width="10">&nbsp;</td><td>Emerald, Alexandrite</td></tr>
	<tr><td>60 years:  </td><td width="10">&nbsp;</td><td>Diamond, Star Ruby</td></tr>
	<tr><td>65 years:  </td><td width="10">&nbsp;</td><td>Blue Spinel, Star Sapphire</td></tr>
	<tr><td>70 years:  </td><td width="10">&nbsp;</td><td>Sapphire, Smoky Quartz</td></tr>
	<tr><td>75 years:  </td><td width="10">&nbsp;</td><td>Diamond</td></tr>
	<tr><td>80 years:  </td><td width="10">&nbsp;</td><td>Ruby</td></tr>
</table>
<p>